Wrench



IVI. PARKER. WRENGH.4 APPLICATION FILED DEC. l0, |920.

l 375% l Q. Patented Dec. 5, 1922 MARTIN Pannen, or s'r. reen,Minnnsera, assienon fro JOHN a". Annan, or sr.

` BAUL, MINNESOTA.

WRENCH.

Application filed December 10.1929. Serial No. 428,685.

To all 'wlw/nt t may concern.' f

Be it known that L MARTIN PARKER7 a subject of the Dominion of Canada,residing at St. Paul, in the county of Ramsey and State ofldinnesotafhave invented certain new and useful improvements inVVrenches; and l do hereby declareftheffollowingftobe a full, clear. andexact ndescription of the invention, such as will enable others skilledin the art to which it appertains to make and use the same. i f i Thisinvention relates to a'wrench and particularly to an adjustablewrenchadapted to be used in place of a'plurality of socket wrenches. f f

It is an object ofthis invention to provide a wrench of extremely simplestructure` and ,which can be readily adjusted to fit various sized nuts.

It is a further objectof this invention to provider a wrench of. greatstrength which can be conveniently usedinstead of the ordinary socketwrench and which` engages the nut from the top. j l

These and other objects and advantages of the invention will be apparentfromthe followingY description made in connection with the accompanyingdrawings in, which ylike reference characters refer to the same partsthroughout the differentvviews and in which:

Fig. 1 isa longitudinal central section of the device some of the partsof which are shown in elevation: y

Fig. 2 is a partial plan viewl of the device;

Fig. 3 is a partialview similar toFig. 1

showing the wrench expanded and engaging sr a nut.

Fig. 4 is a transverse sectional view on line 1 4- of Fig. 1;

Fig. 5 is a sectional view on line 5 5 of Fig. 1; and

Fig. 6 is a partial view showing a modified construction of the jaws onthe wrench.

`Referring to the drawings:

The device is seen to comprise a hollow tubular and tapered body portionhaving a tapered opening extending longitudinally therethrough andformed at one end into a. square cross-section as shown in Fig. 5, toprovide a handle-receiving portion. A handie comprising two oppositelyextending portions 2 and a central hub portion 3 is shown as having thehub portion formed with a square aperture to iit over the 'square endportion of the body member. This handle portion is therefore readilydetachable when it is desired to carry the wrench in a tool kitorpackage. One side of the body portion is extended to form a stationaryjaw memj ber l and ahook portion 5 is formed on the opposite side ofthebody portion over which is placed the movable jaw member 6., the samebeing provided near one end with a suitable aperture lfor engagementover the the other end thereof, this rod being threaded n adjacent itsprojecting end to receive an ad# just-ing nut 10. A suitable washerisprovided between ythe nut 10 and the end of the body 1. The jaws areshownas provided engaging a nut.

The wrench is designed primarily to be usedin place of an ordinarysocket wrench and to engage the nut from the end thereof although whereit is convenient the nut may also be readily engaged from the side.r zTo adjust the aw members thenut 10 is turned andthe screw rod 8 movedlongitudinallj7 of the device.k The link members 7 are then eitheropened or closed to move rthe jaws apart or. towards each other; `Since.the lower jaw as'shownk in Fig. 1 is stationary, the head end of rod 8will swing on the lower Alinks 7 about the fulcrum of the pivot at theend of said links andthe end of rod 8 will therefore be raised when thejaws are in open position and -will approximately contact with theyupper portion of the jaw member l as shown in Fig. 3. The upper jaws 6will obviously swing about the hook member 5 as a fulcrum when thedistance between the jaws is adjusted.

In Fig. 6 a modification is shown in which both the jaws 4 and 6 aresimilar and are pivoted at their inner ends to lugs formed on the end ofthe body member 1. In this construction both jaws will swing when thecircular rod 8 is moved longitudinally and it is unnecessary to have alarge opening in the body member to accommodate the swingw ing movementof the rod 8. The wrench in vwithteeth or corrugations for more rmly` lother particulars is of the same construction as'that shown in Fig. l.

lt is thus seen that the applicant has produced a wrench of simple andrugged construction and one which can be inserted into a comparativelysmall space to reach nuts upon which an ordinary wrench cannot be used.The wrench can therefore be used in place of a socket wrench and bysuitable adjustment thereof can be made to take the place of a largenumber of different sized socket wrenches. It'will, of course, beunderstood that various changes in the form and details of the devicemay be made withoutdeparting from the scope of the invention which,generally stated, consists in the matter shown and described and setforth in the appended claims.

Tvl/vhat is claimed is:

l. A wrench comprising a tubular body portion one side of which isprojected to form a fixed jaw, a movable jaw in align- `ment with saidfixed jaw and pivoted at its one end to said body portion, links pivotedto said jaws, a rod connected to said links and extending through thesaid tubular portion and an operating member for moving said rod andlinks to adjust the distance between said jaws.

2. A wrench comprising xed and movable jaws, a body portionl integrallyconnected to the fixed jaw, toggle link mechanism for movingsaid jawstoward and from each other and operating means for said mechanismextending through said body portion.

3. A wrench comprising a tubular body portion, a handle detachablysecured at one end thereof, a fixed jaw projecting from the other endthereof, a movable jaw pivoted to Said body portion for movement towardand from said fixed jaw, toggle links at each side of said jaws and anoperating rod connected to said links and extending through the saidbody portion.

l. A wrench comprising a tubular body portion, two jaw members carriedthereby, one of which is movable, a pair of toggle links connected tosaid jaws and an operating rod connected at one end to both. of saidlinks and extending through said body portion and being threaded at itsother end and an operating nut engaging said rod to more the samelongitudinally to adjust the distance between the said jaws.

5. A wrench comprising a tapered tubular body portion, a handledetachably secured thereto at one end and a fixed jaw projecting fromthe other end thereof, a hookmember formed at the last mentioned endopposite tothe fixed jaw, a movable jaw pivoted on said hook member, atoggle link mechanism connected to saidjaws at each side thereof, a rodconnected at one end to said toggle mechanism and having its other endthreaded and extended through said body portion and an operating nutengaging said threaded end of the rod to move the same longitudinally.

6. The structureset forth in claim t, and a handle fitted to the outerend of said tubular body portion and extending transversely normalthereto for turning said body.

7. A wrench comprising a long body portion having jaws at its lower end,a link pivotally connected to each of said jaws adjacent the endthereof, a rod secured to the inner ends of said links and extendingklongitudinally throughsaid body portion, means for moving said rodlongitudinally and holding the same in position to variously positionsaid jaws, and means` on said body portion for turning the same.

8. A wrench comprising an elongated body portion having jaws at itslower end, one of which is adapted to move relatively to the other, atoggle mechanism connected to said jaws adjacent their ends for varyingthe distance therebetween, and means for adjusting said togglemechanism.

In testimony whereof I aiiix my signature.

MARTIN PARKER.

